Section 1-5 - General Information Torque Settings `Positional Type' Hydraulic Adaptors
`Positional Type' Hydraulic Adaptors Fitting Procedure On a typical machine, some hydraulic components may utilise `Positional Type' SAE Hydraulic Adaptors. When fitting `Positional Type' Hydraulic Adaptors it is important to adopt the following procedure. If this procedure is not followed correctly, damage to the `O' ring seal 4-A can occur resulting in oil leaks. 1
Ensure the locknut 4-B is screwed back onto the body of the adaptor as far as possible as shown.
2
Check the `O' ring backing washer 4-C is a tight fit on the adaptor. Note that the washer should not move freely, if the washer is slack do not use the adaptor.
3
Check the `O' ring 4-A is fitted and that it is free from damage or nicks. Before fitting the adaptor, smear the `O' ring with clean hydraulic fluid.
Fig 4.
Note: The dimensions and shore hardness of the `O' ring is critical. Should it become necessary to replace the `O' ring, ensure that only JCB Genuine Parts are used. 4
Screw the adaptor into the port of the hydraulic component as far as possible, so that ALL the threads engage and the `O' ring is correctly seated against the sealing face.
5
Set the angular position of the adaptor as required, then secure by tightening the locknut 4-B.
Note: When fitted correctly no more than one thread should be visible at 5-Z as shown. 6
Torque tighten the locknut to 81 Nm (60 lbf ft).
Fig 5.
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